Ice-cream freezer.



, To @Mitcham/- it may concern: i

jiggENT, oEEIcE.

ICE-CREAM FREEZER.

. Be it knownthat I, HENRY J GERNER, a citizen of the United States of America, residing' at Vandergrift, in the county of Westymoreland and State of Pennsylvania,` have invented certain new and useful Improvements in Ice-Cream Freezers, of which the followingis a' specilication, reference being had therein to theaccompanying drawings.

-This invention has relation to ice-cream freezers, and relates in particularto continuous freezers of thatuclass in `which a canis journaled in atub and revolved by suitable 1 mechanism, the cream being fed in at one end ofthe can in a continuous stream and the 1 frozen cream delivered from the other end of o the can.

` The vobject of the present invention is to provide a novel form of ice-.box in which the can is revolubly mounted, and novel means is constructed in -connection with the box whereby the ice may be easily removed when itz-'is desiredfwithout removing the freezingcan therefrom. 4

l `Another object Jvof'my invention'is to .provide novel means in connection with the freezing-can and the tub whereby the ice which is contained within thetub 'will be contin'uousl'y agitated and moved from one pa'rt ofthe tub Ito the other during the operation ofthe freezer.y v' f A'still lfurther object of my invention is to provide novel means in 'connectionwith the dasher of the freezing-can fori` agitating the creamcontained within the can, .said means bein soconstrucite'd that the samemay be readily adjusted so as to produce a 4higher or lower g'rade'of cream when thefreezer is in4 ofperation, or lwhich may bel entirely removed 1 so desired. f

A still further 'object'of my invention is to provide novel means in conjunction with the dasherfor-removing any cream that may be- -come'frozen tok the sides -of the freezing-can,` said meansbeing sofconstructedfasto permit the same Vto rotate within the can and have. an even bearingupon allfsurfaces of saidcan'l.

The lconstruction em loyed to accomplish the above results willbe ereinafter more fully described, and ,referring to the drawings .accompanying this application, like numerals of reference'indicate' like parts throughout the several views, inwhiche-y i Figure 1 isa longitudinal sectional view. of a tub, showing my improved freezing-can '4 mounted therein. Fig. 2 is a side elevation Specication of Letters Patent. I Application lled July y2, 1.904. Serial Nol 215,058.

^ thetub 1 Patented June 19, 1906.

of a freezin u-can removed from the tub. Fig. i

3 is a detai tors. .Fig 4 is a detail perspective view of the dasher removed from the freezing-can, and Fig. 5 is an underneath plan view of the gate carried by the tub and the means employed to lock the same.

To put my invention into practice, I em--V ploy a box or tub in which the freezing agent is to be placed, :and I preferably construct of a casting, drical bottom'2 and ends 3 and 4. The tub is preferably made with a tapering bottom, as illustrated in Fig. 1 of the drawings, the angle at which the bottom of the tub is formed view of'one of the cream-agitathe tub having acylingenerally coinciding with the an le'of the tapered freezing-can contained t erein, this construction permitting an equal s ace to eX-. ist between the freezing-can and't e bottom of the tub at bothends.,` Formed integral with the end 4 of the tub is a suitable leg or support 5,and formed integral with the bottom 2 of the tub is another support 5, these legs or supportsbeing adapted to sustain the tubv upon a suitable platform or table 5a.

Around the sides and bottom of the tub are formeda plurality of ribs, and to these'ribs are adapted to be secured slats or plates 7, providin an air-space between the sides and ends of ft e tub and the-slats or lates 7, this construction.: preventing the co d air occa sioned bythe freezing agent from escaping from the sides yof the tub and also preventing the warm air which surrounds the tub from in anymannerreachi'ng thesides of the casting and causing the freezingv agent within the same to be effected bythe Warm air. The

maybe nged orotherwise secured tov the casting, and; the endy 3 lofthe. casting `1s. protub 1- .is lrovided with a 'suitable lid 8, which.

1 1 formedtherein.

thereof, this ushingbeing provided with an vvided withan opening 9and the end 4 is provided with a bushing` 1 0, having vanv aperture i ool aperture 13, and theslataor plates Tarief-probushing of the tub,protrudes;.' `rHinged .upon n Y k vided with an opening 15, through which'the the slats or plates7, adjacent. tothe opening hinged, as indicated at .17, to ythe* `slats or plates v7, and rigate is provided with a locking-lever 18.l his lever is ivoted to lthe gate, as indicated at19, and 1s provided 1,5- and the bushing 12, is .av gate.16,fwhich isv l with handles 20 20 upon its ends. Upon each side of thegate and secured to the bottom of the tub are the clips 21 21, one of said clips being mounted upon the bottom of the tu dasher, which consists of a shaft 36, the forward end of which is provided with a spiral conveyer 37, which terminates in the discharge-tube 25. The other end of the shaft 36 in a reverse direction tothe other clip, l is journaled in the neck portion. 32 of the whereby when the gate is in a closed position i head 29. the locking-lever 18 may be swung upon its l the end of the neck portion ivot to engage each clip, each end of the l ocking-lever taking into the clips 21 21 and irml holding the gate against the bushing 12, c osing the opening and preventing any freezing agent which is placed in the tub from passing throu h the opening formed in the bushing. By t is construction it will be seen that in case it is desired to remove the freezin agent it is only necessary to strike the loc ing-lever 18 and knock the ends of the same out ofen agement with the clips 21 21, at which time t e gate will drop by gravity,.and the contents or freezing agent of the tub may be removed through the opening formed in the bushing 12.

`The freezing-can, as designated by the reference-numeral 24, is conical in shape and formed with a cylindrical discharge-tube 25 upon its cone-shaped end, the discharge-tube Yprojecting through the opening 9 in the front end of the tub and is surrounded by a closureldisk 26, carrying a stufIing-box 27, upon which is screwed a gland 28, suitable stuling being interposed between the gland and stuffing-box, so as to provide a water-tight joint around the discharge-tube 25. The can' 24 is "provided with a head 29 at its lar er end, 354

said head being secured to the Harigeend 30 of the can, and the head 29 is journaledin the bushingl, formed on one end of the tub, and

a'cap 31 screws-on said bushing, a suitable I I 4C; y packinfg being interposed between the bushing an the cap to produce a water-tight joint around the neck 32 of the head 29. The reference-numeral 33 designates a gear-wheel which is keyed upon thev neck portion32 of the head, whereby a rotary movement may be impartedto the freezing-can by any desired means.

The cone-shaped sides of the freezing-can 24 are provided with a plurality o'f wings or blades 34 and 35, said blades being secured to the surface of the can by any desired means, and, as illustrated in the accompanying drawings, these blades are soldered upon the inclined sides ofthe can. I have arranged one or more of these blades at a diiferent angle to the other blades, and it will be observed 1n the drawings that the blades 35 are positioned at a different angle than the blades 34, this con struction being employed, whereby when the ice is agitated by said blades the blades 35 will have. a tendency to force the ice to the forward end of the tub, while the blades 34 f `will carry the ice to the rear end of the tub,

4Viithin the-freezing-can is mounted the .reference-numeral 51, any

The shaft 36 protrudes through 32 of the head 29 and carries a sprocket-wheel 36', to which rotary motion is communicated from any suitable source of power. Upon the shaft 36 are mounted two s iders 38 39, said spiders being arranged on t e shaft in such manner that the arms-40 41 of the spider 38 will project outwardly at an opposite angle to the arms 42 43 of the spider 39, and in the outer ends of these arms I form slots 44 45. In the slot 44 of the arm 40 I mount a scraper 46, said scraper bein so shaped as to conform to the tapering wal s ofthe can, and the other end of said scraper is secured inthe slot 45 of the arm 43. Another scraper 47 is mounted in the slot 44 of the other arm 41 of the spider 38 and this scraper conforms in shape to the tapering walls of the can and is secured in the slot 45 of the arm 42. To support and maintain the position of the Scrapers 46 47 within their respective slots, I employ spring-clips 48 n 48 and 4949, these spring-clips being secured upon the inner sidesof the arms forming the spiders 38 and 39, as designated at 50, the outer ends of these spring-clips being slotted to engage the Scrapers, as designated by the 'suitable means being employed to fasten the spring-clips to the scra ers.

In or er to provide means to prevent any cream from freezing upon the inside of the head 29, I mount auxiliary Scrapers 52 52 upon'the arms 40 41 of the s ider 38, which is adjacent to the head 29 of t e freezing-can. The Scrapers 52 52 are carried by the curved spring-clips 53 53, these clips being secured to the inner face of the arms 40 41 of the spider 38, and the Scrapers are adapted to be'zil against the head 29 of the freezing-can.

e which lies between the head'29 and the spiral conveyer 37 is made 'Octagon shape or square in cross-section, whereby one or more flat surfaces are provided; In the different views of the drawings I have illustrated this shaft as being square in cross-section, and upon the flat surfaces of the shaft are mounted blades 54 54, one of these blades being shown on an enlarged scale in Fig. 3 of the drawings. EachA one of these blades is provided with a screw-threaded shank portion 55, and by this screw-threaded shank the blade is secured in a screw-threaded recess 56, formed in one of the flat surfaces of the dashershaft,-and inter osed between the fiat surface of the shaft an the blade 54 is a jam-nut 57, whereby the blades 54 may be' locked in any desired position upon the dasher-shaft, this manner of securing the blades thereon permitting the portion of the shaft 36 of the dasher.

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contained 4within the can may be agitated to` blades' vlto be .arranged'at any desired angle the `dasher-shaft I secure a b ade similar tol the blade 54 just described, and by referring to Fig. 4 of the drawings it will be seen that one set of blades is arranged at right angles to Y the other set of blades, whereby the cream roduce a better quality of frozen cream. here the cream to be frozen is of a high grade, these blades can bel entirely dispensed with and removed from the shaft but where the cream to be frozen is of a poor nature and probably of a large percentage of lmilk it is necessaryto' use these blades to produce a frozen'cream of a fine and` smooth 'consistency. By experiment I have foundthat when I employ the blades 34 and 35 to agitate the ice Within the tub it is only necessary to use a much smaller quantity of ice or freezing agent withiny the tub than ifthe agitatingblades 34 and 35 were not used, and by using this ,agitating means the freezing agent is continually moved in the tub, whereby all Y parts of the freezing agent will contact with the freezing-can at one time or another and all dead ice or ice not contacting with the freezing-can will from one time to another be .brought into engagement with said can.

The blades 34 and 53 further facilitate the mixing with the ice of salt or any'brine that may be employed, and these blade/s will thoroughly agitate the brine and-ice, whereby the freezing of the cream within the freezing-can will be greatly facilitated and the. use of 'a freezing agent reduced to. a minimum.

By employing the construction of the tub as illustrated in the accompanying drawings I have provided -novel means wherebyfthe expense of manufacturing a double-bottom tub'is considerably reduced, and by forming ribs around its sides and placing slats or plates upon said ribs the cold air produced y the freezing agent within the tub is held in close proximity to the sides of said tub and the full benefit of the freezing agent derived therefrom. I have provided the opening within the bottom of the tub whereby thev freezing agent placed in said tub may Ybe easily andquickly removed when it is desired to cleansethe tub and place' anew freezing agent therein. When it is necessary to remove the freezing agent, the ,lockinglever 18 is drawn'out of engagement with the clips 21 21 and the gate will-be permitted to drop by gravity to permit the `freezing agent' to pass through the opening formed in the bottom of the tub. The discharge of the freezing agent within the'tub will be facilitated by rotating the freezing-canmounted therein.

axisv in said tub, a

While I have herein. shown the' agitatingblades as being arrangedin a staggeredposition upon the freezing-can, I wish it'.to `be understood that these blades may be arranged in any desired position, whereby the bestl results will be obtained by :agitating the freezing agent, and other slight changes,such i as the detail construction of the blades, may be varied Without departing from the scope .of the invention,

IWhat I claim is- 1-. In a freezing-machine, the combination with a tub adapted to contain a freezing agent, and means for removing said freezing agent from said tub, ,of a cone-'shaped freezing-can rotatably mounted on a horizontal plurality 4of agitators mounted upon said eezing-can, a rotary dasher'arranged within said can, means for rotating said dasher, and a plurality ofagitators carried by said dasher.

2. In a freezing-machine, the combination of Aa rotary can, an independently-rotative shaft arranged in'said can, spirally-shaped Scrapers carried by said shaft, and flat radial blades also carried by the shaft and angularly adjustable thereon.

3. In a freezing-machine, the combination with a tub and a can mountedl therein, of curved agitating-bl'ades arranged in rows on the exterior of the' can,` the curvature of the blades of one row being reverse to the curvature of the blades of the adjacent row.

' 4. In a freezing-machine, the combination of-a tub, a can rotatablyA mounted within said tub, agitating-blades secured to the exterior of the can, a shaft arranged within the can and rotatable independently thereof, spiral scrapecscarried by said shaft and agitating-.bla es carried by said shaft, said blades being detached from said Scrapers,

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and means for adjusting the angle of -said 5. -In a freezing-machine, the combination with a tub having an inclined bottom', of a revoluble kcone-shaped can, reversely-curved IIO agitatingeblades carried by said can andl adapted to ropel a freezing agent backward andforward in the tub, a rotary shaft arranged wi thin the can, and a spiral conveyer carried by said shaft, and adapted to pro el lthe freezing cream toward the smaller en of the can. i v

6. The combinationwith a tub for freezing-machines, of a cone-shaped can. rotata-v curved blades secured upon said can, one or more of said blades being arranged at a different angle to the other-blades.

7. In a cooling-machine, the/combination with a tub ada ted to contain a freezing agent, said tub therein, means for` closing said opening, a

aving an opening formed cone-shaped-freezing-can rotatably mounted on a horizontal axis in said tub, means carp ried by said can to agitate Said freezing agent,

a dasher-'shaft arranged Within said can, and agitators mounted 11 on Said shaft rotatable on their longitudina' axis, and' means for securing said agitators at any angle to which they maybe adjusted. l

8. In a cooling-machine, the combination with a tub ada ted to conta-in a cooling agent, .said tub aving an. o ening formed therein, means for closing sai opening, of'a cone-shaped can rotatably mounted within said tub, and a plurality of agitating-blades carried by said can, a flasher-shaft mounted in said can, a plurality of blades secured upon said shaft, and means for adjusting said blades by turning them on their longitudinal a-X-is and means for securing the blades in adjusted position.

9. In combination with a tub", a freezingcan, a rotary shaft mounted in Said can, radial arms carriedl by said shaft, Scrapers mounted on said radial arms and adapted to scrape the sides ofthe can, springs carriedby said arms, and Scrapers carried b sai springs 'adapted to scrape the end of t e can.

10. In a freezing-machine, the combination With the tub, and a 'cone-Shaped can rotatably mounted in Said tub, of a revolublc shaft mounted in said can, slotted arms carried -by said shaft, Scrapers seated in the slots in said arms andv movable therein, and springclips secured to said arms and engaging the Scrapers.

In testimony whereof I alix my Signature in the presence of two Witnesses.

HENRY J. GERNER.` Witnesses:

C.' C. MCMAHON, JOHN PATEnSoN. 

